Impacts of hydrofacies geometry designed from seismic refraction tomography on estimated hydrogeophysical variables

Lesparre, Nolwenn; Pasquet, Sylvain; Ackerer, Philippe

doi:https://doi.org/10.5194/hess-28-873-2024

Articles | Volume 28, issue 4

https://doi.org/10.5194/hess-28-873-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/hess-28-873-2024

© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 28, issue 4

Research article

|

26 Feb 2024

Research article |

| 26 Feb 2024

Impacts of hydrofacies geometry designed from seismic refraction tomography on estimated hydrogeophysical variables

Nolwenn Lesparre, Sylvain Pasquet, and Philippe Ackerer

Supplement

https://doi.org/10.5194/hess-28-873-2024-supplement

Data sets

Seismic profiles measured on the Strengbach catchment, France Sylvain Pasquet https://doi.org/10.26169/hplus.ohge_seismic_profiles

Model code and software

pyGIMLi: An open-source library for modelling and inversion in geophysics (https://www.pygimli.org/installation.html) C. Rücker et al. https://doi.org/10.1016/j.cageo.2017.07.011

GSLIB: Geostatistical Software Library and Users Guide (http://www.gslib.com/main_gd.html) C. V. Deutsch and A. G. Journel http://claytonvdeutsch.com/wp-content/uploads/2019/03/GSLIB-Book-Second-Edition.pdf

Short summary

Vertical maps of seismic velocity reflect variations of subsurface porosity. We use such images to design the geometry of subsurface compartments delimited by velocity thresholds. The obtained patterns are inserted into a hydrogeological model to test the influence of random geometries, velocity thresholds, and hydraulic parameters on data estimated from the model: the depth of the groundwater and magnetic resonance sounding is a geophysical method sensitive to subsurface water content.